Foaming device and fabric treatment equipment

Abstract

The invention provides a foaming device and fabric treatment equipment, and belongs to the field of fabric treatment equipment. According to the foaming device, the first annular cavity and the second annular cavity are arranged, at least part of the first annular cavity is configured to be the gradually-shrunk water outlet cavity which is gradually shrunk from the water inlet side to the water outlet side, and the annular water outlet is located at the tail end of the gradually-shrunk water outlet cavity, so that certain flow velocity and pressure difference are formed when washing water flows out. The annular gas outlet is close to the annular water outlet, and gas can be sucked and mixed through negative pressure generated by water flow. By means of the design, mixing of gas and water is more efficient, and therefore the foaming efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of fabric processing equipment, and more specifically, to a foaming device and a fabric processing equipment. Background Art

[0002] In the prior art, a round or flat suction port is provided on the jet device or the nozzle of the fabric processing equipment to generate foam. The intake area and the foam generation area are small, resulting in a small intake volume of air and a problem of low foam generation volume. Summary of the Invention

[0003] An embodiment of this application provides a foaming device and a fabric processing equipment. The foaming device is provided with a first annular cavity and a second annular cavity, and at least a part of the first annular cavity is configured as a tapered water outlet cavity that tapers from the water inlet side to the water outlet side. The annular water outlet is located at the end of the tapered water outlet cavity, so that the washing water forms a certain flow rate and pressure difference when flowing out. The annular air outlet is close to the annular water outlet, and can use the negative pressure generated by the water flow to suck in and mix the gas. This design makes the mixing of gas and water more efficient, thereby improving the foaming efficiency. Specifically:

[0004] A first aspect of the embodiment of this application provides a foaming device for installing in a fabric processing equipment to foam washing water. The foaming device includes:

[0005] A foaming main body, in which a first annular cavity and a second annular cavity are formed. An air inlet and a water inlet are formed on the surface of the foaming main body. The water inlet communicates with the first annular cavity, the air inlet communicates with the second annular cavity, the second annular cavity is arranged outside and / or inside the first annular cavity in a ring shape, the first annular cavity is formed with an annular water outlet, and the second annular cavity is formed with an annular air outlet at a position close to the annular water outlet;

[0006] At least a part of the first annular cavity close to the annular water outlet is configured as a tapered water outlet cavity in a tapered form.

[0007] In the above technical solution, the water outlet width d5 of the annular water outlet is configured to be between 0.2 mm and 1 mm.

[0008] In the above technical solution, an included angle c1 of 10° - 60° is formed between the inclined cavity wall of the tapered water outlet cavity and the water outlet direction of the annular water outlet.

[0009] In the above technical solution, at least a part of the second annular cavity close to the annular air outlet is configured as a tapered air outlet cavity.

[0010] In the above technical solution, the air outlet width d4 of the tapered air outlet cavity is designed to be equidistant from the air inlet side to the air outlet side;

[0011] Where 0.2 mm ≤ d4 ≤ 1 mm.

[0012] In the above technical solution, the first annular cavity includes a first annular cavity section A and a first annular cavity section C from the water inlet side to the water outlet side;

[0013] Wherein at least a part of the first annular cavity section A near the water inlet is configured as a diffuser section, and at least a part of the first annular cavity section C near the annular water outlet is configured as a tapered water outlet cavity.

[0014] In the above technical solution, the first annular cavity further includes a first annular cavity section B between the first annular cavity section A and the first annular cavity section C;

[0015] Wherein at least a part of the first annular cavity section B from the water inlet side to the water outlet side is configured as a straight cylinder section.

[0016] In the above technical solution, the second annular cavity includes a second annular cavity section A and a second annular cavity section B from the air inlet side to the air outlet side. At least a part of the second annular cavity section A from the air inlet side to the air outlet side is configured as a straight cylinder section, and at least a part of the second annular cavity section B from the air inlet side to the air outlet side is configured as an annular conical cavity section;

[0017] Wherein the cavity opening width of the second annular cavity section A is greater than the cavity opening width of the second annular cavity section B.

[0018] In the above technical solution, the foaming device further includes a third annular cavity as a bubble outlet cavity. The annular opening on the inlet side of the third annular cavity communicates with the annular water outlet and the annular air outlet, and the annular opening on the outlet side is used to communicate with the fabric treatment cylinder of the fabric treatment device.

[0019] In the above technical solution, the cavity opening width of the third annular cavity is d13, the water opening width of the annular water outlet is d5, and the air opening width of the annular air outlet is d4;

[0020] Wherein d13 > d5 and d13 > d4.

[0021] In the above technical solution, the cavity opening width d13 of the third annular cavity is configured to gradually increase from its inlet side to its outlet side.

[0022] In the above technical solution, the foaming device includes:

[0023] An outer cylinder and an inner cylinder, the inner cylinder and the outer cylinder are coaxially sleeved together. An outer cylinder cavity is formed inside the outer cylinder, an inner cylinder cavity is formed inside the inner cylinder, and a second annular cavity with an annular air outlet is defined between the inner wall of the outer cylinder and the outer wall of the inner cylinder;

[0024] A flow dividing member, the flow dividing member is arranged in the inner cylinder cavity of the inner cylinder, and a first annular cavity with an annular water outlet is defined between the outer wall of the flow dividing member and the inner wall of the inner cylinder.

[0025] In the above technical solution, the inner cylinder body includes an inner cylinder section A with a diffusion section, an inner cylinder section B with a straight cylinder section, and an inner cylinder section C with a contraction section in the fluid flow direction;

[0026] The flow dividing member includes a flow dividing section A with a diffusion section and a flow dividing section B with a straight cylinder section in the fluid flow direction;

[0027] A first annular cavity section A in a diffusion form is defined between the inner cylinder section A and the flow dividing section A, a first annular cavity section B in a straight cylinder form is defined between the inner cylinder section B and the flow dividing section B, and a tapered water outlet cavity in a tapered form is defined between the inner cylinder section C and the flow dividing section B.

[0028] In the above technical solution, the flow dividing section A is configured as a conical head structure, and the conical tip position of the flow dividing section A corresponds to the water inlet position of the foaming device.

[0029] In the above technical solution, the outer cylinder body includes an outer cylinder section A with a straight cylinder section, an outer cylinder section B with a contraction section, and an outer cylinder section C with a straight cylinder section in the fluid flow direction;

[0030] The flow dividing member further includes a flow dividing section C formed at the end of the flow dividing section B and configured as a contraction form in the fluid flow direction;

[0031] A second annular cavity section A in a straight cylinder form is defined between the outer cylinder section A and the inner cylinder section B, an annular conical gas outlet cavity with an annular cone form is defined between the outer cylinder section B and the inner cylinder section C, and a third annular cavity with a cavity width gradually increasing in the fluid flow direction is defined between the outer cylinder section C and the flow dividing section C.

[0032] In the above technical solution, the flow dividing section A of the flow dividing member is configured as a frustum structure with a gradually increasing diameter in the fluid flow direction;

[0033] The flow dividing section B of the flow dividing member is configured as a cylinder structure with an equal diameter in the fluid flow direction;

[0034] The flow dividing section C of the flow dividing member is configured as a frustum structure with a gradually decreasing diameter in the fluid flow direction;

[0035] The inclination angle c2 of the inclined outer wall surface of the flow dividing section C is configured to be 0.5° - 5°.

[0036] In the above technical solution, the inner diameter d8 of the water inlet pipe is 4 mm - 15 mm, the inner diameter d9 of the air inlet pipe is 2 mm - 10 mm, the inner diameter d7 of the inner cylinder section B is 22 mm - 32 mm, the inner diameter d1 of the outer cylinder section A is 32 mm - 40 mm, the inner diameter d3 of the outer cylinder section C is 15 mm - 25 mm, the extension length d11 of the outer cylinder section C is 12 mm - 25 mm, the diameter d2 of the flow splitting section B is 15 mm - 25 mm, the extension length d10 of the flow splitting section C is 14 mm - 30 mm, and the diameter d12 of the flow splitting section C on the side away from the water inlet is 14 mm - 24 mm.

[0037] In the above technical solution, the outer cylinder body has an outer cylinder inlet side opening and an outer cylinder outlet side opening in the fluid flow direction, and the inner cylinder body has an inner cylinder inlet side opening and an inner cylinder outlet side opening in the fluid flow direction;

[0038] The foaming device further includes an air inlet pipe, a water inlet pipe and a cylinder cover. The air inlet pipe is arranged on the outer wall of the outer cylinder body between the outer cylinder inlet side opening and the outer cylinder outlet side opening and communicates with the outer cylinder cavity. The water inlet pipe is arranged at the inner cylinder inlet side opening and communicates with the inner cylinder cavity through the inlet side opening. The cylinder cover is sleeved on the outer periphery of the water inlet pipe;

[0039] The inner cylinder body is inserted or rotated into the outer cylinder cavity through the inlet side opening of the outer cylinder body. The cylinder cover on the water inlet pipe of the inner cylinder body is closed together with the outer cylinder inlet side opening. A second annular cavity with an annular air outlet is defined between the closed inner cylinder body and the outer cylinder body;

[0040] A part of the flow splitting member is placed in the inner cylinder cavity of the inner cylinder body, and the other part is placed outside the inner cylinder cavity through the inner cylinder outlet side opening and is located in the outer cylinder cavity. Among them, an annular water outlet is defined between the part of the flow splitting member placed in the inner cylinder cavity and the inner cylinder body. A third annular cavity communicating the annular air outlet and the annular water outlet is defined between the other part of the flow splitting member placed outside the inner cylinder cavity and located in the outer cylinder cavity and the outer cylinder body.

[0041] In the above technical solution, the foaming device further includes:

[0042] An air inlet pipe, a water inlet pipe and a cylinder cover. The air inlet pipe is arranged on the outer cylinder wall of the outer cylinder body. The air inlet pipe and the outer cylinder body form an integral outer cylinder kit. The water inlet pipe is arranged on the inner cylinder body and corresponds to the tip position of the flow splitting member. The cylinder cover is sleeved on the water inlet pipe. The water inlet pipe, the cylinder cover, the inner cylinder body and the flow splitting member form an integral inner cylinder kit;

[0043] Among them, the inner cylinder kit and the outer cylinder kit are sleeved and fitted together to define a foaming main body having a first annular cavity and a second annular cavity.

[0044] The second aspect of the embodiments of the present application further provides a fabric treatment device, which includes the foaming device provided in the first aspect of the embodiments of the present application.

[0045] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0046] In the foaming device of the embodiment of the present application, by providing a first annular cavity and a second annular cavity, and at least part of the first annular cavity is configured as a tapered water outlet cavity that tapers from the water inlet side to the water outlet side, and the annular water outlet is located at the end of the tapered water outlet cavity, so that the washing water forms a certain flow rate and pressure difference when flowing out. The annular gas outlet is close to the annular water outlet, and the negative pressure generated by the water flow can be used to suck in and mix the gas. This design makes the mixing of gas and water more efficient, thereby improving the foaming efficiency. At the same time, the design of the annular water outlet and the annular gas outlet makes the mixing of gas and water more uniform, thereby improving the quality of the foam, making the foam more delicate and stable. The structure of the tapered water outlet cavity enables the washing water to better suck in and mix the gas from the annular gas outlet when flowing out from the annular water outlet due to the increase in flow rate and the change in pressure. This mixing method can make the size of the foam more uniform, avoiding the situation of too large or too small foam, thereby improving the quality of the foam. In addition, since the annular gas outlet 2021 increases the suction area and the annular water outlet 1031 increases the foaming action area, the foaming output of the foaming device can be increased. Description of the Drawings

[0047] Figure 1 is a schematic cross-sectional structure diagram of the foaming device in the embodiment of the present application Figure 1 ;

[0048] Figure 2 is Figure 1 an enlarged structural schematic diagram of part A in the embodiment;

[0049] Figure 3 is a schematic cross-sectional structure diagram of the foaming device in the embodiment of the present application Figure 2 ;

[0050] Figure 4 is a schematic overall structure diagram of the foaming device in the embodiment of the present application;

[0051] Figure 5 is a schematic overall structure diagram of the outer cylinder in the embodiment of the present application;

[0052] Figure 6 is a schematic cross-sectional structure diagram of the outer cylinder in the embodiment of the present application;

[0053] Figure 7 is a schematic top view structure diagram of the outer cylinder in the embodiment of the present application;

[0054] Figure 8 is a schematic overall structure diagram of the inner cylinder in the embodiment of the present application;

[0055] Figure 9 It is a schematic cross-sectional structure diagram of the inner cylinder body in the embodiment of the present application.

[0056] Among them:

[0057] 1a - outer cylinder body; 1a1 - outer cylinder section A; 1a2 - outer cylinder section B; 1a3 - outer cylinder section C;

[0058] 1b - inner cylinder body; 1b1 - inner cylinder section A; 1b2 - inner cylinder section B; 1b3 - inner cylinder section C;

[0059] 1c - flow dividing member; 1c1 - flow dividing section A; 1c2 - flow dividing section B; 1c3 - flow dividing section C;

[0060] 1d - intake pipe;

[0061] 1e - water inlet pipe;

[0062] 1f - cylinder cover;

[0063] 1g - connecting rib;

[0064] 10 - first annular cavity; 101 - first annular cavity section A; 102 - first annular cavity section B; 103 - first annular cavity section C; 1031 - annular water outlet;

[0065] 20 - second annular cavity; 201 - second annular cavity section A; 202 - second annular cavity section B; 2021 - annular gas outlet;

[0066] 30 - third annular cavity;

[0067] 40 - water inlet;

[0068] 50 - gas inlet. Detailed implementation manners

[0069] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0070] Throughout the specification and claims, the following terms have at least the meanings explicitly associated herein, unless the context otherwise requires. The meanings determined below do not necessarily limit the terms, but merely provide illustrative examples of the terms.

[0071] In the description of the present invention, the phrase "in one embodiment" does not necessarily refer to the same embodiment, although it may. Similarly, the phrase "in some embodiments", when used multiple times, does not necessarily refer to the same embodiment, although it may. As used herein, the term "or" is an inclusive "or" operator and is equivalent to the term "and / or", unless the context clearly dictates otherwise. The term "based on" is not exclusive and allows for additional factors not described, unless the context clearly dictates otherwise. The word "exemplary" means "serving as an example, instance, or illustration" herein. Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments. The scope of the present invention is limited only by the scope of the appended claims, and any examples set forth in this specification are not intended to be limiting, but merely illustrate some of the many possible embodiments of the claimed invention. The various embodiments provided by the present invention should not be construed as limiting the scope of protection of the present invention.

[0072] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0073] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0074] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0076] As Figures 1 - 9 shown, in the first aspect of the embodiment of the present application, a foaming device is provided, which is used to be installed in a fabric processing device to foam washing water. The foaming device includes:

[0077] A foaming main body, in which a first annular cavity 10 and a second annular cavity 20 are formed. An air inlet 50 and a water inlet 40 are formed on the surface of the foaming main body. The water inlet 40 communicates with the first annular cavity 10, and the air inlet 50 communicates with the second annular cavity 20. The second annular cavity 20 is arranged outside and / or inside the first annular cavity 10 in a ring shape. The first annular cavity 10 is formed with an annular water outlet 1031, and the second annular cavity 20 is formed with an annular air outlet 2021 at a position close to the annular water outlet 1031;

[0078] Wherein at least a part of the first annular cavity 10 close to the annular water outlet 1031 is configured as a tapered water outlet cavity in a tapered form.

[0079] In the foaming device in the embodiment of the present application, by providing the first annular cavity 10 and the second annular cavity 20, and configuring at least a part of the first annular cavity 10 as a tapered water outlet cavity in a tapered form from the water inlet side to the water outlet side, and the annular water outlet 1031 is located at the end of the tapered water outlet cavity, a certain flow rate and pressure difference are formed when the washing water flows out. The annular air outlet 2021 is close to the annular water outlet 1031, and can suck in and mix gas by using the negative pressure generated by the water flow. This design makes the mixing of gas and water more efficient, thereby improving the foaming efficiency. At the same time, the design of the annular water outlet 1031 and the annular air outlet 2021 makes the mixing of gas and water more uniform, thereby improving the quality of the foam, making the foam more delicate and stable. As shown in the attached Figure 1 - Attached Figure 3As shown, the structure of the tapered water outlet cavity enables the washing water to better suck in and mix the gas from the annular air outlet 2021 when flowing out from the annular water outlet 1031 due to the increase in flow velocity and the change in pressure. This mixing method can make the size of the foam more uniform, avoiding the situation of too large or too small foam, thus improving the quality of the foam. In addition, since the annular air outlet 2021 increases the air suction area and the annular water outlet 1031 increases the foaming action area, the foaming output of the foaming device can be increased.

[0080] It should be noted that since the second annular cavity 20 can be annularly arranged outside and / or inside the first annular cavity 10, the annular air outlet 2021 can be arranged inside the annular water outlet 1031, or outside the annular water outlet 1031, or annular air outlets 2021 are arranged both inside and outside the annular water outlet 1031.

[0081] Furthermore, in some possible embodiments, the water outlet width d5 of the annular water outlet 1031 is configured to be between 0.2 mm and 1 mm.

[0082] In the embodiment of the present application, by setting the water outlet width d5 of the annular water outlet 1031 between 0.2 mm and 1 mm, preferably between 0.3 mm and 0.5 mm, the foaming effect can be significantly optimized. This specific width range enables the water flow to form an ideal flow velocity and pressure difference when passing through the annular water outlet, thereby more effectively generating negative pressure, sucking in gas and mixing with the water flow to form a large amount of delicate and stable foam. According to Bernoulli's equation in fluid mechanics, when the water flow passes through the narrow annular water outlet 1031, the flow velocity will increase significantly and the pressure will decrease, thereby forming a negative pressure area near the annular water outlet. This negative pressure area can effectively suck in gas and make the gas mix fully with the water flow. The water outlet width of 0.3 mm - 0.5 mm can ensure that the water flow velocity and pressure difference reach the best balance, making the gas mix more evenly with the water flow, so that the generated foam is more delicate, uniform and stable. An overly wide water outlet width will result in insufficient flow velocity and an insignificant negative pressure effect, while an overly narrow water outlet width may cause too high a flow velocity, resulting in overly fine and unstable foam.

[0083] Furthermore, in some possible embodiments, an angle c1 of 10° - 60° is formed between the inclined cavity wall of the tapered water outlet cavity and the water outlet direction of the annular water outlet 1031.

[0084] In the embodiments of the present application, by setting the included angle c1 between the inclined cavity wall of the tapered water outlet cavity and the water outlet direction of the annular water outlet 1031 between 10° and 60°, the hydrodynamic performance can be significantly optimized. This specific included angle range enables the water flow to form a more reasonable flow velocity and pressure distribution when passing through the tapered water outlet cavity, thereby more effectively generating negative pressure, sucking in gas and mixing with the water flow to form a large number of delicate and stable bubbles. The included angle of 10° - 60° can ensure that when the water flow passes through the tapered water outlet cavity, the flow velocity and pressure distribution reach the best balance. If the included angle is too small, the water flow velocity may be insufficient and the negative pressure effect is not obvious; if the included angle is too large, the water flow velocity may be too high, resulting in overly fine and unstable bubbles.

[0085] Further, in some possible embodiments, at least a part of the second annular cavity 20 near the annular gas outlet 2021 is configured as a conical gas outlet cavity.

[0086] In the embodiments of the present application, by designing at least a part of the second annular cavity 20 as a conical gas outlet cavity, the gas suction efficiency can be significantly enhanced. The design of the conical gas outlet cavity enables the gas to flow more smoothly when entering the second annular cavity and form a more uniform gas flow distribution at the annular gas outlet 2021, so that it can be more effectively sucked in and mixed with the water flow.

[0087] Further, in some possible embodiments, the width d4 of the air outlet of the conical gas outlet cavity is designed to be equidistant from the air inlet side to the air outlet side;

[0088] where 0.2 mm ≤ d4 ≤ 1 mm.

[0089] In the embodiments of the present application, the width d4 of the air outlet of the conical gas outlet cavity is designed to be equidistant and limited between 0.2 mm and 1 mm, preferably 0.3 mm ≤ d4 ≤ 0.5 mm. At this time, the gas distribution can be significantly optimized. This design enables the gas to be more evenly distributed when entering the second annular cavity 20, thereby improving the efficiency of gas mixing with the water flow. The equidistant width d4 of the air outlet ensures that the gas can be evenly distributed when entering the conical gas outlet cavity, avoiding the situation of too strong or too weak local gas flow. This uniform gas flow distribution helps to improve the efficiency of gas mixing with the water flow.

[0090] Further, in some possible embodiments, the first annular cavity 10 includes a first annular cavity section A101 and a first annular cavity section C103 from the water inlet side to the water outlet side;

[0091] where at least a part of the first annular cavity section A101 near the water inlet 40 is configured as a diffusion section, and at least a part of the first annular cavity section C103 near the annular water outlet 1031 is configured as a tapered water outlet cavity.

[0092] Further, in some possible embodiments, the first annular cavity 10 further includes a first annular cavity section B102 disposed between the first annular cavity section A101 and the first annular cavity section C103;

[0093] Wherein the first annular cavity section B102 is at least partially configured as a straight tube section from the water inlet side to the water outlet side.

[0094] In the embodiment of the present application, by subdividing the first annular cavity 10 into three sections and respectively designing them as a diffusion section, a straight tube section, and a tapered water outlet cavity, the water flow path can be significantly optimized. This design enables the water flow to gradually adjust the flow rate and pressure after entering the first annular cavity, and finally form an ideal flow rate and pressure distribution at the annular water outlet 1031, thereby more effectively generating negative pressure, sucking in gas and mixing it with the water flow. Specifically, the design of the diffusion section enables the water flow to gradually spread after entering the first annular cavity, reducing the impact force of the water flow and increasing the surface area of the water flow, preparing for the subsequent mixing process. The design of the straight tube section enables the water flow to flow stably after passing through the diffusion section, further adjusting the flow rate and pressure to ensure that the water flow reaches a stable state before entering the tapered water outlet cavity. The design of the tapered water outlet cavity enables the water flow to form sufficient negative pressure when passing through the annular water outlet 1031, thereby more effectively sucking in gas and mixing it with the water flow. By optimizing the water flow path, the water flow can gradually adjust the flow rate and pressure after entering the first annular cavity, and finally form an ideal flow rate and pressure distribution at the annular water outlet 1031. This design can significantly improve the foaming efficiency, enabling the gas to be sucked in and mixed with the water flow more efficiently, thereby generating more foam in a short time.

[0095] Further, in some possible embodiments, the second annular cavity 20 includes a second annular cavity section A201 and a second annular cavity section B202 from the gas inlet side to the gas outlet side. The second annular cavity section A201 is at least partially configured as a straight tube section from the gas inlet side to the gas outlet side, and the second annular cavity section B202 is at least partially configured as a conical cavity section from the gas inlet side to the gas outlet side;

[0096] Wherein the cavity width of the second annular cavity section A201 is greater than the cavity width of the second annular cavity section B202.

[0097] In the embodiments of the present application, by subdividing the second annular cavity 20 into two segments and respectively designing them as a straight tube segment and a conical air outlet cavity, the gas flow path can be significantly optimized. This design enables the gas to gradually adjust its flow rate and pressure after entering the second annular cavity, and finally form an ideal flow rate and pressure distribution at the annular air outlet 2021, thereby more effectively mixing with the water flow. Specifically, the design of the straight tube segment enables the gas to flow stably after entering the second annular cavity, initially adjusting the flow rate and pressure to prepare for the subsequent mixing process. The design of the conical air outlet cavity enables the gas to gradually accelerate when approaching the annular air outlet 2021, forming a uniform air flow distribution, thereby more effectively mixing with the water flow. The cavity width of the second annular cavity segment A201 is greater than the cavity width of the second annular cavity segment B202. This design can ensure that the gas has sufficient space for preliminary adjustment before entering the conical air outlet cavity and at the same time form a more uniform air flow distribution in the conical air outlet cavity. By optimizing the gas flow path, the gas can gradually adjust its flow rate and pressure after entering the second annular cavity, and finally form an ideal flow rate and pressure distribution at the annular air outlet 2021. This design can significantly improve the mixing efficiency of the gas and the water flow, thereby improving the foaming efficiency.

[0098] Further, in some possible embodiments, the foaming device further includes a third annular cavity 30 serving as a foam outlet cavity. The annular opening on the inlet side of the third annular cavity 30 communicates with the annular water outlet 1031 and the annular air outlet 2021, and the annular opening on the outlet side is used to communicate with the fabric treatment cylinder of the fabric treatment device.

[0099] In the embodiments of the present application, by introducing the third annular cavity 30 as a foam outlet cavity, the foam output path can be significantly optimized. The inlet side of the third annular cavity 30 communicates with the annular water outlet 1031 and the annular air outlet 2021, and the outlet side communicates with the fabric treatment cylinder of the fabric treatment device. This design enables the foam to be smoothly output to the fabric treatment cylinder after generation, avoiding loss and uneven distribution of the foam during the output process. The design of the third annular cavity 30 provides a coherent output path, ensuring that the foam can be directly and smoothly output to the fabric treatment cylinder after generation, reducing the resistance and loss of the foam during the output process. Through the guidance of the third annular cavity 30, the foam can be more evenly distributed into the fabric treatment cylinder, improving the utilization efficiency of the foam and ensuring a uniform washing effect during the fabric treatment process. It should be noted that since the inlet side of the third annular cavity 30 communicates with both the annular water outlet 1031 and the annular air outlet 2021 at the same time, the foam can be further stabilized and homogenized when entering the third annular cavity 30, thereby improving the fineness and stability of the foam.

[0100] Further, in some possible embodiments, the cavity width of the third annular cavity 30 is d13, the water outlet width of the annular water outlet is d5, and the air outlet width of the annular air outlet is d4;

[0101] Where d13 > d5 and d13 > d4.

[0102] In the embodiment of the present application, by setting d13 > d5 and d13 > d4, the orifice width of the third annular cavity 30 is greater than the widths of the annular water outlet and the annular air outlet, which can provide a more spacious flow space for the mixed foam. This design helps to further mix the gas and water flow, ensuring that the foam can be fully mixed and stably output after entering the third annular cavity. The larger orifice width d13 provides a more spacious flow space for the mixed foam, reducing the resistance and aggregation of the foam during the output process. And the larger orifice width d13 ensures that the gas and water flow can be further mixed after entering the third annular cavity, making the foam more uniform and stable. This design enables the foam to be further stabilized and homogenized after entering the third annular cavity, thereby improving the fineness and stability of the foam.

[0103] Further, in some possible implementation manners, the orifice width d13 of the third annular cavity 30 is configured to gradually increase from its inlet side to its outlet side.

[0104] In the embodiment of the present application, by designing the orifice width d13 of the third annular cavity 30 to gradually increase from the inlet side to the outlet side, the flow and distribution of the foam can be significantly optimized. This design enables the foam to gradually spread after entering the third annular cavity, reducing the resistance and aggregation of the foam during the output process, and thus being more evenly distributed into the fabric treatment cylinder. This design enables the foam to be more evenly distributed when entering the fabric treatment cylinder, improving the utilization efficiency of the foam and ensuring a uniform washing effect during the fabric treatment process.

[0105] Further, in some possible implementation manners, the foaming device includes:

[0106] An outer cylinder 1a and an inner cylinder 1b, the inner cylinder 1a and the outer cylinder 1b are coaxially sleeved together, an outer cylinder cavity is formed inside the outer cylinder 1a, an inner cylinder cavity is formed inside the inner cylinder 1b, and a second annular cavity 20 with an annular air outlet 2021 is defined between the inner wall of the outer cylinder 1a and the outer wall of the inner cylinder 1b;

[0107] A flow dividing member 1c, the flow dividing member 1c is disposed in the inner cylinder cavity of the inner cylinder 1b, and a first annular cavity 10 with an annular water outlet 1031 is defined between the outer wall of the flow dividing member 1c and the inner wall of the inner cylinder 1b.

[0108] In the embodiment of the present application, by designing the foaming device as a structure in which the outer cylinder 1a and the inner cylinder 1b are coaxially sleeved inside and outside, and a flow dividing member 1c is arranged inside the inner cylinder 1b, the structural design of the foaming device can be significantly optimized. This design makes the formation of the first annular cavity 10 and the second annular cavity 20 more reasonable and improves the overall performance of the foaming device. The coaxial design of the outer cylinder 1a and the inner cylinder 1b enables the second annular cavity 20 to be evenly distributed between the inner cylinder 1b and the outer cylinder 1a, ensuring that the gas can be evenly distributed at the annular gas outlet 2021. The arrangement of the flow dividing member 1c enables the water flow to be evenly distributed inside the inner cylinder 1b, ensuring that an ideal flow rate and pressure distribution can be formed at the annular water outlet 1031. By optimizing the structural design, the water flow and the gas can be more efficiently mixed after entering the foaming device, thereby significantly improving the foaming efficiency. This design can ensure that the water flow and the gas can be more effectively mixed at the annular water outlet 1031 and the annular gas outlet 2021, generating more foam.

[0109] Further, in some possible implementation manners, the inner cylinder 1b includes an inner cylinder section A1b1 with a diffusion section, an inner cylinder section B1b2 with a straight cylinder section, and an inner cylinder section C1b3 with a contraction section in the fluid flow direction;

[0110] The flow dividing member 1c includes a flow dividing section A1c1 with a diffusion section and a flow dividing section B1c2 with a straight cylinder section in the fluid flow direction;

[0111] Wherein, a first annular cavity section A101 in a diffusion form is defined between the inner cylinder section A1b1 and the flow dividing section A1c1, a first annular cavity section B102 in a straight cylinder form is defined between the inner cylinder section B1b2 and the flow dividing section B1c2, and a tapered water outlet cavity in a tapered form is defined between the inner cylinder section C1b3 and the flow dividing section B1c2.

[0112] In the embodiments of the present application, by subdividing the inner cylinder 1b and the flow divider 1c into different segments and respectively designing them as a diffuser section, a straight cylinder section, and a contraction section, the water flow path can be significantly optimized. This design enables the water flow to gradually adjust its velocity and pressure after entering the first annular cavity 10, and finally form an ideal velocity and pressure distribution at the annular water outlet 1031, thereby more effectively generating negative pressure, sucking in gas, and mixing it with the water flow. Specifically, the design of the diffuser section allows the water flow to gradually spread after entering the first annular cavity, reducing the impact force of the water flow while increasing the surface area of the water flow, preparing for the subsequent mixing process. The design of the straight cylinder section enables the water flow to flow stably after passing through the diffuser section, further adjusting the velocity and pressure to ensure that the water flow reaches a stable state before entering the tapered water outlet cavity. The tapered design enables the water flow to form sufficient negative pressure when passing through the annular water outlet 1031, thereby more effectively sucking in gas and mixing it with the water flow. By optimizing the water flow path, the water flow can gradually adjust its velocity and pressure after entering the first annular cavity, and finally form an ideal velocity and pressure distribution at the annular water outlet 1031. This design can significantly improve the foaming efficiency, enabling the gas to be sucked in and mixed with the water flow more efficiently, thereby generating more foam in a short time.

[0113] Further, in some possible implementation manners, the flow dividing section A1c1 is configured as a tapered head structure, and the tapered tip position of the flow dividing section A1c1 corresponds to the position of the water inlet 40 of the foaming device.

[0114] In the embodiments of the present application, by designing the flow dividing section A1c1 as a tapered head structure and making the tapered tip position correspond to the position of the water inlet 40, the entry and distribution of the water flow can be significantly optimized. This design enables the water flow to be more evenly distributed when entering the foaming device, reducing the impact force and turbulence of the water flow, thereby improving the stability and uniformity of the water flow. Specifically, the tapered head structure can guide the water flow to be evenly distributed around the flow dividing section A1c1, reducing the local concentration and impact force of the water flow, effectively reducing the turbulence when the water flow enters, and enabling the water flow to enter the inner cylinder cavity more smoothly, providing better conditions for the subsequent mixing process. By optimizing the entry and distribution of the water flow, the tapered head structure can significantly improve the foaming efficiency. The water flow is more uniform and stable when entering the foaming device, so that more effectively negative pressure can be generated at the annular water outlet 1031, sucking in gas and mixing it with the water flow to generate more foam.

[0115] Further, in some possible implementation manners, the outer cylinder 1a includes an outer cylinder section A1a1 of a straight cylinder section, an outer cylinder section B1a2 of a contraction section, and an outer cylinder section C1a3 of a straight cylinder section in the fluid flow direction;

[0116] The flow divider 1c further includes a flow dividing section C1c3 formed at the end of the flow dividing section B1c2 and configured as a contraction form in the fluid flow direction;

[0117] A second annular cavity section A201 in the form of a straight cylinder is defined between the outer cylinder section A1a1 and the inner cylinder section B1b2. An annular conical air outlet cavity in the form of an annular cone is defined between the outer cylinder section B1a2 and the inner cylinder section C1b3. A third annular cavity 30 with a cavity width gradually increasing in the fluid flow direction is defined between the outer cylinder section C1a3 and the flow dividing section C1c3.

[0118] In the embodiment of the present application, by subdividing the outer cylinder body 1a and the flow dividing member 1c into different sections and respectively designing them as a straight cylinder section, a contraction section, and a gradually increasing cavity width, the paths of the gas and the water flow can be significantly optimized. This design enables the water flow and the gas to gradually adjust the flow rate and pressure after entering the foaming device, and finally form an ideal flow rate and pressure distribution at the annular air outlet 2021 and the annular water outlet 1031, thereby mixing more effectively and generating foam.

[0119] Specifically, the design of the straight cylinder section enables the water flow and the gas to flow stably after entering the foaming device and initially adjust the flow rate and pressure. The design of the contraction section enables the water flow and the gas to gradually accelerate when approaching the annular air outlet 2021 and the annular water outlet 1031, forming a uniform flow rate and pressure distribution. The cavity width of the third annular cavity 30 gradually increases in the fluid flow direction, providing a more spacious flow space for the mixed foam and reducing the resistance and aggregation of the foam during the output process. By optimizing the paths of the gas and the water flow, the water flow and the gas can gradually adjust the flow rate and pressure after entering the foaming device, and finally form an ideal flow rate and pressure distribution at the annular air outlet 2021 and the annular water outlet 1031. This design can significantly improve the foaming efficiency, enabling the gas to be inhaled more efficiently and mixed with the water flow, thereby generating more foam in a short time. As Figures 1 - 3 shown, the water flow and the gas can gradually adjust the flow rate and pressure after passing through the straight sections 1a1 and 1b2 and the contraction sections 1a2 and 1b3, ensuring the best state when entering the annular conical air outlet cavity.

[0120] Furthermore, in some possible implementation manners, the flow dividing section A1c1 of the flow dividing member 1c is configured as a frustum structure with a gradually increasing diameter in the fluid flow direction;

[0121] The flow dividing section B1c2 of the flow dividing member 1c is configured as a cylindrical structure with an equal diameter in the fluid flow direction;

[0122] The flow dividing section C1c3 of the flow dividing member 1c is configured as a frustum structure with a gradually decreasing diameter in the fluid flow direction;

[0123] The inclination angle c2 of the inclined outer wall surface of the flow dividing section C1c is configured to be 0.5° - 5°.

[0124] In the embodiment of the present application, by designing the diversion section A1c1 of the flow splitter 1c as a frustum structure with a gradually increasing diameter, it can effectively guide the water flow to be evenly distributed, reducing the impact force and turbulence when the water flow enters. This design enables the water flow to flow more smoothly after entering the inner cylinder cavity, providing better conditions for the subsequent mixing process. Specifically, the frustum structure can guide the water flow to be evenly distributed around the diversion section A1c1, reducing the local concentration and impact force of the water flow, and enabling the water flow to enter the inner cylinder cavity more smoothly.

[0125] In the embodiment of the present application, by designing the diversion section B1c2 of the flow splitter 1c as a cylindrical structure with an equal diameter, it can ensure the stable flow of the water flow after passing through the diversion section A1c1. This design enables the water flow to reach a stable state before entering the gradually tapered water outlet cavity 1b3, so as to mix with the gas more effectively. Specifically, the cylindrical structure can ensure the stable flow of the water flow after passing through the diversion section A1c1, reducing the fluctuation of the water flow. The stable water flow can mix with the gas more effectively, improving the mixing efficiency.

[0126] In the embodiment of the present application, by designing the diversion section C1c3 of the flow splitter 1c as a circular truncated cone structure with a gradually decreasing diameter and setting the inclination angle c2 between 0.5° and 5°, preferably between 1° and 2°, it can significantly optimize the output and distribution of the foam. This design enables the mixed foam to gradually spread when entering the third annular cavity 30, reducing the resistance and aggregation of the foam during the output process, and thus being more evenly distributed into the fabric treatment cylinder, which is beneficial to the discharge of the foam. Specifically, the circular truncated cone structure can guide the foam to gradually spread, reducing the sudden accumulation or blockage of the foam when entering the third annular cavity 30, and ensuring the smooth flow of the foam. Preferably, the lower end surface of the diversion section C1c3 away from the water inlet 30 can be selected as a closed plane to prevent the reverse flow of foam or water.

[0127] Further, in some possible implementation manners, the inner diameter d8 of the water inlet pipe is 4 mm - 15 mm, preferably 6 mm - 8 mm; the inner diameter d9 of the air inlet pipe is 2 mm - 10 mm, preferably 4 mm - 6 mm; the inner diameter d7 of the inner cylinder section B is 22 mm - 32 mm, preferably 24 mm - 28 mm; the inner diameter d1 of the outer cylinder section A is 32 mm - 40 mm, preferably 34 mm - 38 mm; the inner diameter d3 of the outer cylinder section C is 15 mm - 25 mm, preferably 19 mm - 21 mm; the extension length d11 of the outer cylinder section C is 12 mm - 25 mm, preferably 15 mm - 18 mm; the diameter d2 of the diversion section B is 15 mm - 25 mm, preferably 18 mm - 20 mm; the extension length d10 of the diversion section C is 14 mm - 30 mm, preferably 17 mm - 20 mm; and the diameter d12 of the diversion section C away from the water inlet is 14 mm - 24 mm, preferably 16.5 mm - 18.5 mm.

[0128] In the embodiments of the present application, by defining the inner diameter d8 of the water inlet pipe as 4 mm - 15 mm and the inner diameter d9 of the air inlet pipe as 2 mm - 10 mm, it is possible to ensure that the water flow and gas have appropriate flow rates and pressures when entering the foaming device. These dimensional ranges are optimized to ensure a stable supply of water flow and gas, thereby improving the foaming efficiency. By defining the inner diameter d7 of the inner cylinder section B as 22 mm - 32 mm and the inner diameter d1 of the outer cylinder section A as 32 mm - 40 mm, it is possible to ensure that the water flow and gas can reach ideal mixing conditions after entering the foaming device. These dimensional ranges are optimized to ensure that sufficient negative pressure is formed at the annular water outlet 1031 and the annular gas outlet 2021, so as to mix more effectively and generate foam. By defining the inner diameter d3 of the outer cylinder section C as 15 mm - 25 mm and the diameter d2 of the shunt section B as 15 mm - 25 mm, it is possible to ensure that the mixed foam has appropriate flow rates and pressure distributions when entering the third annular cavity 30. These dimensional ranges are optimized to ensure that the foam is more uniform and stable during the output process. By defining the extension length d11 of the outer cylinder section C as 12 mm - 25 mm and the extension length d10 of the shunt section C as 14 mm - 30 mm, it is possible to ensure that the structure of the foaming device is more stable and compact. These dimensional ranges are optimized to reduce equipment vibration and wear caused by unreasonable structural design, thereby improving the stability and reliability of the equipment.

[0129] That is, in the embodiments of the present application, by specifically defining the specific dimensional parameters of each component, the design and manufacturing costs of the foaming device can be optimized. These dimensional ranges are optimized to ensure that the foaming device achieves the best performance balance during the design and manufacturing processes, reducing unnecessary material waste and manufacturing complexity.

[0130] Further, in some possible implementation manners, the outer cylinder 1a has an outer cylinder inlet side opening and an outer cylinder outlet side opening in the fluid flow direction, and the inner cylinder 1b has an inner cylinder inlet side opening and an inner cylinder outlet side opening in the fluid flow direction;

[0131] The foaming device further includes an air inlet pipe 1d, a water inlet pipe 1e, and a cylinder cover 1f. The air inlet pipe 1d is disposed on the outer wall of the outer cylinder 1a between the outer cylinder inlet side opening and the outer cylinder outlet side opening and communicates with the outer cylinder cavity. The water inlet pipe 1e is disposed at the inner cylinder inlet side opening and communicates with the inner cylinder cavity through the inlet side opening. The cylinder cover 1f is sleeved on the outer periphery of the water inlet pipe 1e; preferably, the water inlet pipe 1e is integrally formed with the inner cylinder 1b.

[0132] The inner cylinder 1b is inserted or rotated into the outer cylinder cavity through the inlet side opening of the outer cylinder 1a. The cylinder cover 1f on the water inlet pipe 1e of the inner cylinder is closed together with the outer cylinder inlet side opening. After closing, a second annular cavity 20 with an annular gas outlet 2021 is defined between the inner cylinder 1b and the outer cylinder 1.

[0133] A part of the flow divider 1c is placed in the inner cylinder cavity of the inner cylinder body 1b, and the other part is placed outside the inner cylinder cavity through the inner cylinder outlet side opening and is located in the outer cylinder cavity. A first annular cavity 10 with an annular water outlet 1031 is defined between the part of the flow divider 1c placed in the inner cylinder cavity and the inner cylinder body 1b. A third annular cavity 30 communicating the annular gas outlet 2021 and the annular water outlet 1031 is defined between the other part of the flow divider 1c placed outside the inner cylinder cavity and located in the outer cylinder cavity and the outer cylinder body 1a.

[0134] In the embodiment of the present application, the outer cylinder body 1a and the inner cylinder body 1b are assembled by inserting or screwing through the inlet side opening, ensuring a tight fit between the two. The cylinder cover 1f is covered with the outer cylinder inlet side opening, further enhancing the sealing performance and reducing the leakage of gas and water flow. Through the optimized structural assembly, it is ensured that the water flow and gas can efficiently enter the foaming device and form an ideal flow rate and pressure distribution at the annular gas outlet 2021 and the annular water outlet 1031. This design can significantly improve the foaming efficiency, enabling the gas to be more efficiently inhaled and mixed with the water flow, thereby generating more foam in a short time.

[0135] Preferably, the flow divider 1c is connected to the outer cylinder section c1a3 of the outer cylinder body 1a through a plurality of uniformly distributed connecting ribs 1g. Optionally, the flow divider 1c, the connecting ribs 1g, and the outer cylinder section c1a3 of the outer cylinder body 1a are integrally formed. The number of connecting ribs 1g can be selected from 3 to 20, preferably 10. As Figure 7 shown, the width d6 of a single connecting rib 1g can be selected from 0.5 mm to 3 mm.

[0136] Furthermore, in some possible implementation manners, the foaming device further includes:

[0137] An air inlet pipe 1d, a water inlet pipe 1e, and a cylinder cover 1f. The air inlet pipe 1d is arranged on the outer wall of the outer cylinder body 1a. The air inlet pipe 1d and the outer cylinder body 1a form an integral outer cylinder kit. The water inlet pipe 1e is arranged on the inner cylinder body 1a and corresponds to the tip position of the flow divider 1c. The cylinder cover 1f is sleeved on the water inlet pipe 1e. The water inlet pipe 1e, the cylinder cover 1f, the inner cylinder body 1b, and the flow divider 1c form an integral inner cylinder kit;

[0138] Wherein the inner cylinder kit and the outer cylinder kit are sleeved and fitted together to define a foaming main body having a first annular cavity 10 and a second annular cavity 20.

[0139] Refer to the attached Figure 3 and the attached Figure 4, the process of the improved foaming device in the embodiment of the present application is as follows: The washing water containing detergent enters the water inlet pipe 1e from the water inlet 40, and is dispersed and flowed at the inlet position of the inner cylinder section A1b1 by the shunt member 1c. Then the water flows out through the annular water outlet 1031. Since the outlet at the annular water outlet 1031 becomes smaller, a negative pressure is generated in the outlet area after the water flows through the annular water outlet 1031, sucking gas from the annular gas outlet 2021 into the water flow to mix and generate foam. The gas at the annular air inlet 2021 enters from the air inlet pipe 1d. Since the annular air inlet 2021 increases the air intake area and the annular water outlet 1031 increases the foaming action area, the amount of foam generated can be increased. The generated foam is discharged from the third annular cavity 30.

[0140] Further, in the second aspect of the embodiment of the present application, a fabric treatment device is also provided, which includes the foaming device provided in the first aspect of the embodiment of the present application.

[0141] In the embodiment of the present application, by integrating the optimized foaming device in the fabric treatment device, the washing effect can be significantly improved. The foaming device can generate a large amount of delicate and stable foam, and these foams can more effectively penetrate into the fabric fibers to remove stains and odors.

[0142] In the above embodiments of the present application, the descriptions of each embodiment have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. The steps shown in the relevant flowcharts can be executed in a computer system such as a set of computer-executable instructions. And although the logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in a different order than here. In other words, the step order described in the previous embodiments is only an example, and a reasonable adjustment of the step order based on the content of the embodiments of the present application is also within the protection scope of the embodiments of the present application.

[0143] The serial numbers or the order of introduction of the embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.

[0144] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0145] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A foaming device for installation in a fabric treatment apparatus to foam washing water, characterized in that, The foaming device includes: A foaming main body, inside which a first annular cavity (10) and a second annular cavity (20) are formed, and on the surface of the foaming main body, an air inlet (50) and a water inlet (40) are formed. The water inlet (40) communicates with the first annular cavity (10), and the air inlet (50) communicates with the second annular cavity (20). The second annular cavity (20) is arranged around the outside and / or inside of the first annular cavity (10). The first annular cavity (10) is formed with an annular water outlet (1031), and the second annular cavity (20) is formed with an annular air outlet (2021) at a position close to the annular water outlet (1031); Wherein at least a part of the first annular cavity (10) close to the annular water outlet (1031) is configured as a tapered water outlet cavity in a tapered form.

2. The foaming device according to claim 1, wherein The water outlet width d5 of the annular water outlet (1031) is configured to be between 0.2 mm and 1 mm.

3. The foaming device according to claim 2, characterized in that, An included angle c1 of 10°-60° is formed between the inclined cavity wall of the tapered water outlet cavity and the water outlet direction of the annular water outlet (1031).

4. The foaming device according to any one of claims 1 to 3, characterized in that At least a part of the second annular cavity (20) close to the annular air outlet (2021) is configured as a conical air outlet cavity.

5. The foaming device according to claim 4, wherein, The air outlet width d4 of the conical air outlet cavity is designed to be equidistant from the air inlet side to the air outlet side; Where 0.2 mm ≤ d4 ≤ 1 mm.

6. The foaming device according to any one of claims 1-3 and 5, characterized in that, The first annular cavity (10) includes a first annular cavity section A (101) and a first annular cavity section C (103) from the water inlet side to the water outlet side; Wherein at least a part of the first annular cavity section A (101) close to the water inlet (40) is configured as a diffusing section, and at least a part of the first annular cavity section C (103) close to the annular water outlet (1031) is configured as a tapered water outlet cavity.

7. The foaming device according to claim 6, wherein, The first annular cavity (10) further includes a first annular cavity section B (102) between the first annular cavity section A (101) and the first annular cavity section C (103); Wherein at least a part of the first annular cavity section B (102) from the water inlet side to the water outlet side is configured as a straight cylinder section.

8. The foaming device according to claim 4, characterized in that, The second annular cavity (20) includes a second annular cavity section A (201) and a second annular cavity section B (202) from the air inlet side to the air outlet side. At least a part of the second annular cavity section A (201) from the air inlet side to the air outlet side is configured as a straight cylinder section, and at least a part of the second annular cavity section B (202) from the air inlet side to the air outlet side is configured as a conical cavity section; Wherein the cavity opening width of the second annular cavity section A (201) is greater than the cavity opening width of the second annular cavity section B (202).

9. The foaming device according to any one of claims 1-3, 5, 7, and 8, characterized in that The foaming device further includes a third annular cavity (30) as a foam outlet cavity. The annular opening on the inlet side of the third annular cavity (30) communicates with the annular water outlet (1031) and the annular air outlet (2021), and the annular opening on the outlet side is used to communicate with the fabric treatment cylinder of the fabric treatment device.

10. The foaming device according to claim 9, characterized in that, The cavity opening width of the third annular cavity (30) is d13, the water outlet width of the annular water outlet is d5, and the air outlet width of the annular air outlet is d4; Where d13 > d5, d13 > d4.

11. The foaming device according to claim 9, characterized in that, The cavity opening width d13 of the third annular cavity (30) is configured to gradually increase from its inlet side to its outlet side.

12. The foaming device according to any one of claims 1-3, 5, 7, 8, 10, and 11, characterized in that, The foaming device includes: an outer cylinder (1a) and an inner cylinder (1b), the inner cylinder (1a) and the outer cylinder (1b) are coaxially sleeved together, an outer cylinder cavity is formed inside the outer cylinder (1a), an inner cylinder cavity is formed inside the inner cylinder (1b), and a second annular cavity (20) having the annular air outlet (2021) is defined between the inner wall of the outer cylinder (1a) and the outer wall of the inner cylinder (1b); a flow divider (1c), the flow divider (1c) is disposed in the inner cylinder cavity of the inner cylinder (1b), and a first annular cavity (10) having the annular water outlet (1031) is defined between the outer wall of the flow divider (1c) and the inner wall of the inner cylinder (1b).

13. The foaming device according to claim 12, wherein the inner cylinder (1b) includes an inner cylinder section A (1b1) with a diffusion section, an inner cylinder section B (1b2) with a straight cylinder section, and an inner cylinder section C (1b3) with a contraction section in the fluid flow direction; the flow divider (1c) includes a flow dividing section A (1c1) with a diffusion section and a flow dividing section B (1c2) with a straight cylinder section in the fluid flow direction; wherein a first annular cavity section A (101) in a diffusion form is defined between the inner cylinder section A (1b1) and the flow dividing section A (1c1), a first annular cavity section B (102) in a straight cylinder form is defined between the inner cylinder section B (1b2) and the flow dividing section B (1c2), and a tapered water outlet cavity in a tapered form is defined between the inner cylinder section C (1b3) and the flow dividing section B (1c2).

14. The foaming device according to claim 13, characterized in that, The flow dividing section A (1c1) is configured as a tapered head structure, and the tapered tip position of the flow dividing section A (1c1) corresponds to the position of the water inlet (40) of the foaming device.

15. The foaming device according to claim 13, wherein the outer cylinder (1a) includes an outer cylinder section A (1a1) with a straight cylinder section, an outer cylinder section B (1a2) with a contraction section, and an outer cylinder section C (1a3) with a straight cylinder section in the fluid flow direction; the flow divider (1c) further includes a flow dividing section C (1c3) formed at the end of the flow dividing section B (1c2) and configured as a contraction form in the fluid flow direction; wherein a second annular cavity section A (201) in a straight cylinder form is defined between the outer cylinder section A (1a1) and the inner cylinder section B (1b2), an annular conical air outlet cavity with an annular cone form is defined between the outer cylinder section B (1a2) and the inner cylinder section C (1b3), and a third annular cavity (30) with a cavity opening width gradually increasing in the fluid flow direction is defined between the outer cylinder section C (1a3) and the flow dividing section C (1c3).

16. The foaming device according to claim 15, wherein the flow dividing section A (1c1) of the flow divider (1c) is configured as a frustum structure with a gradually increasing diameter in the fluid flow direction; The diversion section B (1c2) of the diversion member (1c) is configured as a cylindrical structure with a constant diameter in the fluid flow direction; The diversion section C (1c3) of the diversion member (1c) is configured as a frustum structure with a gradually decreasing diameter in the fluid flow direction; Wherein the inclination angle c2 of the inclined outer wall surface of the diversion section C (1c) is configured to be 0.5° - 5°.

17. The foaming device according to claim 12, characterized in that The outer cylinder (1a) has an outer cylinder inlet side opening and an outer cylinder outlet side opening in the fluid flow direction, and the inner cylinder (1b) has an inner cylinder inlet side opening and an inner cylinder outlet side opening in the fluid flow direction; The foaming device further includes an air inlet pipe (1d), a water inlet pipe (1e) and a cylinder cover (1f). The air inlet pipe (1d) is arranged on the outer wall of the outer cylinder (1a) between the outer cylinder inlet side opening and the outer cylinder outlet side opening and communicates with the outer cylinder cavity. The water inlet pipe (1e) is arranged at the inner cylinder inlet side opening and communicates with the inner cylinder cavity through the inlet side opening. The cylinder cover (1f) is sleeved on the outer periphery of the water inlet pipe (1e); The inner cylinder (1b) is inserted or rotated into the outer cylinder cavity through the inlet side opening of the outer cylinder (1a). The cylinder cover (1f) on the inner cylinder water inlet pipe (1e) is closed together with the outer cylinder inlet side opening. After closing, a second annular cavity (20) with the annular air outlet (2021) is defined between the inner cylinder (1b) and the outer cylinder (1); A part of the diversion member (1c) is placed in the inner cylinder cavity of the inner cylinder (1b), and the other part is placed outside the inner cylinder cavity through the inner cylinder outlet side opening and is located in the outer cylinder cavity. Wherein, a first annular cavity (10) with the annular water outlet (1031) is defined between the part of the diversion member (1c) placed in the inner cylinder cavity and the inner cylinder (1b), and a third annular cavity (30) connecting the annular air outlet (2021) and the annular water outlet (1031) is defined between the other part of the diversion member (1c) placed outside the inner cylinder cavity and located in the outer cylinder cavity and the outer cylinder (1a).

18. The foaming device according to claim 12, wherein The foaming device further includes: An air inlet pipe (1d), a water inlet pipe (1e) and a cylinder cover (1f). The air inlet pipe (1d) is arranged on the outer cylinder wall of the outer cylinder (1a). The air inlet pipe (1d) and the outer cylinder (1a) form an integral outer cylinder kit. The water inlet pipe (1e) is arranged on the inner cylinder (1a) and corresponds to the tip position of the diversion member (1c). The cylinder cover (1f) is sleeved on the water inlet pipe (1e). The water inlet pipe (1e), the cylinder cover (1f), the inner cylinder (1b) and the diversion member (1c) form an integral inner cylinder kit; Wherein the inner cylinder kit and the outer cylinder kit are sleeved and fitted together to define a foaming main body with the first annular cavity (10) and the second annular cavity (20).

19. A fabric processing device, characterized in that, Including the foaming device according to any one of claims 1 - 18.

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